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lib/crypto: add aes encryption routines to main cryto lib.

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Guenther
This commit is contained in:
Günther Deschner 2009-09-15 23:52:20 +02:00
parent 8703d9f5bf
commit 87acb96fc3
5 changed files with 1464 additions and 1 deletions
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114
lib/crypto/aes.c Normal file
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/*
* Copyright (c) 2003 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "replace.h"
#include "rijndael-alg-fst.h"
#include "aes.h"
int
AES_set_encrypt_key(const unsigned char *userkey, const int bits, AES_KEY *key)
{
key->rounds = rijndaelKeySetupEnc(key->key, userkey, bits);
if (key->rounds == 0)
return -1;
return 0;
}
int
AES_set_decrypt_key(const unsigned char *userkey, const int bits, AES_KEY *key)
{
key->rounds = rijndaelKeySetupDec(key->key, userkey, bits);
if (key->rounds == 0)
return -1;
return 0;
}
void
AES_encrypt(const unsigned char *in, unsigned char *out, const AES_KEY *key)
{
rijndaelEncrypt(key->key, key->rounds, in, out);
}
void
AES_decrypt(const unsigned char *in, unsigned char *out, const AES_KEY *key)
{
rijndaelDecrypt(key->key, key->rounds, in, out);
}
void
AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
unsigned long size, const AES_KEY *key,
unsigned char *iv, int forward_encrypt)
{
unsigned char tmp[AES_BLOCK_SIZE];
int i;
if (forward_encrypt) {
while (size >= AES_BLOCK_SIZE) {
for (i = 0; i < AES_BLOCK_SIZE; i++)
tmp[i] = in[i] ^ iv[i];
AES_encrypt(tmp, out, key);
memcpy(iv, out, AES_BLOCK_SIZE);
size -= AES_BLOCK_SIZE;
in += AES_BLOCK_SIZE;
out += AES_BLOCK_SIZE;
}
if (size) {
for (i = 0; i < size; i++)
tmp[i] = in[i] ^ iv[i];
for (i = size; i < AES_BLOCK_SIZE; i++)
tmp[i] = iv[i];
AES_encrypt(tmp, out, key);
memcpy(iv, out, AES_BLOCK_SIZE);
}
} else {
while (size >= AES_BLOCK_SIZE) {
memcpy(tmp, in, AES_BLOCK_SIZE);
AES_decrypt(tmp, out, key);
for (i = 0; i < AES_BLOCK_SIZE; i++)
out[i] ^= iv[i];
memcpy(iv, tmp, AES_BLOCK_SIZE);
size -= AES_BLOCK_SIZE;
in += AES_BLOCK_SIZE;
out += AES_BLOCK_SIZE;
}
if (size) {
memcpy(tmp, in, AES_BLOCK_SIZE);
AES_decrypt(tmp, out, key);
for (i = 0; i < size; i++)
out[i] ^= iv[i];
memcpy(iv, tmp, AES_BLOCK_SIZE);
}
}
}

79
lib/crypto/aes.h Normal file
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/*
* Copyright (c) 2003-2004 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $Id$ */
#ifndef LIB_CRYPTO_AES_H
#define LIB_CRYPTO_AES_H 1
/* symbol renaming */
#define AES_set_encrypt_key samba_AES_set_encrypt_key
#define AES_set_decrypt_key samba_AES_decrypt_key
#define AES_encrypt samba_AES_encrypt
#define AES_decrypt samba_AES_decrypt
#define AES_cbc_encrypt samba_AES_cbc_encrypt
/*
*
*/
#define AES_BLOCK_SIZE 16
#define AES_MAXNR 14
#define AES_ENCRYPT 1
#define AES_DECRYPT 0
typedef struct aes_key {
uint32_t key[(AES_MAXNR+1)*4];
int rounds;
} AES_KEY;
#ifdef __cplusplus
extern "C" {
#endif
int AES_set_encrypt_key(const unsigned char *, const int, AES_KEY *);
int AES_set_decrypt_key(const unsigned char *, const int, AES_KEY *);
void AES_encrypt(const unsigned char *, unsigned char *, const AES_KEY *);
void AES_decrypt(const unsigned char *, unsigned char *, const AES_KEY *);
void AES_cbc_encrypt(const unsigned char *, unsigned char *,
const unsigned long, const AES_KEY *,
unsigned char *, int);
#ifdef __cplusplus
}
#endif
#endif /* LIB_CRYPTO_AES_H */

1223
lib/crypto/rijndael-alg-fst.c Normal file
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46
lib/crypto/rijndael-alg-fst.h Normal file
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/* $NetBSD: rijndael-alg-fst.h,v 1.2 2000/10/02 17:19:15 itojun Exp $ */
/* $KAME: rijndael-alg-fst.h,v 1.5 2003/07/15 10:47:16 itojun Exp $ */
/**
* rijndael-alg-fst.h
*
* @version 3.0 (December 2000)
*
* Optimised ANSI C code for the Rijndael cipher (now AES)
*
* @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
* @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
* @author Paulo Barreto <paulo.barreto@terra.com.br>
*
* This code is hereby placed in the public domain.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LIB_CRYPTO_RIJNDAEL_ALG_FST_H
#define LIB_CRYPTO_RIJNDAEL_ALG_FST_H
/* symbol renaming */
#define rijndaelKeySetupEnc _samba_rijndaelKeySetupEnc
#define rijndaelKeySetupDec _samba_rijndaelKeySetupDec
#define rijndaelEncrypt _samba_rijndaelEncrypt
#define rijndaelDecrypt _samba_rijndaelDecrypt
#define RIJNDAEL_MAXKC (256/32)
#define RIJNDAEL_MAXKB (256/8)
#define RIJNDAEL_MAXNR 14
int rijndaelKeySetupEnc(uint32_t rk[/*4*(Nr + 1)*/], const uint8_t cipherKey[], int keyBits);
int rijndaelKeySetupDec(uint32_t rk[/*4*(Nr + 1)*/], const uint8_t cipherKey[], int keyBits);
void rijndaelEncrypt(const uint32_t rk[/*4*(Nr + 1)*/], int Nr, const uint8_t pt[16], uint8_t ct[16]);
void rijndaelDecrypt(const uint32_t rk[/*4*(Nr + 1)*/], int Nr, const uint8_t ct[16], uint8_t pt[16]);
#endif /* LIB_CRYPTO_RIJNDAEL_ALG_FST_H */

3
source3/Makefile.in
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@ -372,7 +372,8 @@ UTIL_OBJ = ../lib/util/rbtree.o ../lib/util/signal.o ../lib/util/time.o \
CRYPTO_OBJ = ../lib/crypto/crc32.o ../lib/crypto/md5.o \
../lib/crypto/hmacmd5.o ../lib/crypto/arcfour.o \
../lib/crypto/md4.o \
../lib/crypto/sha256.o ../lib/crypto/hmacsha256.o
../lib/crypto/sha256.o ../lib/crypto/hmacsha256.o \
../lib/crypto/aes.o ../lib/crypto/rijndael-alg-fst.o
LIB_OBJ = $(LIBSAMBAUTIL_OBJ) $(UTIL_OBJ) $(CRYPTO_OBJ) \
lib/messages.o librpc/gen_ndr/ndr_messaging.o lib/messages_local.o \